Document And Entity Information	6 Months Ended
	Dec. 31, 2014	Feb. 12, 2015
Entity Registrant Name	NATURAL ALTERNATIVES INTERNATIONAL INC
Entity Central Index Key	0000787253
Current Fiscal Year End Date	--06-30
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		6,918,890
Document Type	10-Q
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Amendment Flag	false